Love both breeds, but (insert disclaimer here)…
I’m a Corgi mom. He has a high herding “instinct”, with a well-controlled drive/urge, he will down stay. He is in the house, by himself, unattended for about 10 hours a day, is not neurotic, does not chew, and never has any accidents in the house. He has not been in a crate since he was about 3 months old, when he decided that just wasn’t working for him and he learned to navigate the stairs.
Corgis are the most intelligent, adaptable little buggers I’ve ever met, and I’ve known several, good in nearly any environment, except the desert. Aussies tend to need the “out and active lifestyle”, very smart dogs, just more “specialty” type dogs.
In both breeds, I’m talking about well bred dogs from reputable breeders, not in-bred stuff bred for small sizes or colors.
All this said, Corgi’s are a lot like pot bellied pigs, you’ll never see a thin one, they are very clever about getting us to meet all their needs and wants.